I would think so, because if it was indeed that straightforward (pattern X reveals future movement Y), it would inherently mean that the stock market is easy to

I would think so, because if it was indeed that straightforward (pattern X reveals future movement Y), it would inherently mean that the stock market is easy to predict and that markets are rational. Markets aren't easy to predict (that's why people who DO predict them correctly make bank) nor are they rational. TA can provide historical reference points, sure, and in some cases can indicate that something is likely to happen (to a degree, anyway), but cannot accurately predict anything consistently.